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Debt and Trust Preferred Securities (Tables)

12 Months Ended

Dec. 31, 2012

Debt And Trust Preferred Securities [Abstract]

Schedule of Long-term Debt Instruments [Table Text Block]

		2012			2011
$400 million 6.20% Subordinated Debentures due 2042		$	400,000		$	--
$400 million 6.75% Junior Subordinated Debentures due 2065			318,727			318,725
$400 million 5.00% Senior Notes due 2021			398,141			397,920
$400 million 6.45% Senior Notes due 2019			399,534			399,466
$300 million 5.625% Senior Notes due 2017			298,851			298,577
	Long-term Debt	$	1,815,253		$	1,414,688

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Tabular disclosure of long-debt instruments or arrangements, including identification, terms, features, collateral requirements and other information necessary to a fair presentation. These are debt arrangements that originally required repayment more than twelve months after issuance or greater than the normal operating cycle of the entity, if longer.

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